Improvement in machines for upsetting tires



UNITED STATES PATENT OFFICE.

ALFRED INGAILS, OE INDEPENDENCE, IO\\'A.

lMPROVEMENT lN MACHINES FOR UPSETTING TIRES.

Specificatirm forming part of Letters latent No. 35,097, dated April 29, 1862.

T0 aZZ whom it may concern:

Iie it known that I, ALFRED INGALLS, of Indepernlence, in the county of .l'luehanan and State of Iowa, have invented a new and Improved Implement or Device for Shrinking or U'psetting the (Fires of Wheels; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making apart of this specifieatimi, in which- Figure ,l is a front or face view of my invention; Fig. i, a vertical section of the same,

taken in the line a: .1, Fig.1; Fig. 3, a section of the same, taken in the line y 1 ,Iiig. 1.

Similar letters of reference indicate correspondin parts in the several figures.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A A represent two metal bars, the upper parts of which are perforated with holes (I, in any of which a pin, B, maybe titted. The lower end of the bar A is attached permanently to a segment-stock, U, which is formed of two plates, 7) 7;, secured side by side, with a space, c, between them, as shown clearly in Figs. 2 and i. The lower end of the bar A is free or disengaged, and is titled and allowed to work or move freely between the plates 7) l1.

, Each bar A A is provided at itslower part with a horizontal plate, 7;, and these plates rest upon the upper concave surface of the stock (l, and form bearirig-surfaces for the tire while being acted upon. The bars A A are also each provided with a jaw, I). These jaws are formed of plates, the upper ends of which are suspended loosely on horizontal pins e e, and a cam, f, is fitted or secured to each bar A A, said cams being each provided with a handle or lever, g, for the purpose of turning them. (See uhigs. 1 and The cams f, it will be seen by referring to these figures, are atthe outer-sides of the jaws D D.

E is a plate, which rests on the upper eoncave surface of the stock C. This plate is provided with a pendent link or eye, 72, which passes down between the plates 7) 7) of the stock C between the bars A A. The plate E is perforated with holes 71, in any of which a pin, 1', is fitted.

I the stock 5 ver, G, atta('*hed to it, which may be of any suitable length. The cam or eccentric F, it will be seen by referring to Fig. .l, is at the outer side of the movable bar A.

II is a key, which is attached to the bar A by a chain,j, and 7; is a key or wedge, which is inserted in the loop or eye 71 of the plate E.

The device :is used as follows: The stock C is secured between the jaws of an ordinary vise, or it may be permanently attached to a fixed upright or support. The key or wedge 7c is withdrawn from the loop or eye 71 of the plate E, and the key It hangs loosely from the bar A. The tire to be operated upon is heated at the point where it is to be shrunk or upset, and the pin I is passed through a hole, a, in the bars A A, which will be at a point coinciding with the center of the tire; hence the object of having a plurality of holes a is to accommodate the device to tires of different diameters. The tire, when properly heated at the desired point, is placed vertically upon the upper concave side of the stock 0, the heated portion being between the jaws I) D, the bar A being adjusted su fiieient-ly far in an outward direction to admit of such result. The lower ends of the jaws I) D are then brought in contact with the inner surface of the tire by turning or adjusting the cams f f and the bearing-plate E is forced upward against the outer surface of the tire by drivingthe key or wedge 7; into the loop or eye 7L between the plate E and the stock C. The operator then draws down the lever G and the cam E forces inward or toward the bar A the bar A, and the two jaws l) I) clamp the tire and cause it to be upsetor contracted,

the cams f serving as bearings for the jaws.-

simple, and may be manufactured at a small cost, so as to be Within the reach of artisans in a small way of business.

The cams f f form an essential feature of the operation, as they not only serve as rests or bearing for the jaws D D and retain the same in proper position while at work, but they also serve as a means to adjust the jaws in proper position relatively with their work or the tire to be acted upon and to throw them out therefrom to release the tire when the work is completed. This adjustment of the jaws through the medium of the cams also admits of the former being adapted to act upon tires of different thicknesses.

The pin 1' serves to prevent the lateral bulging out of the heated portion of the tire when under pressure, the inner edge of the tire bearing against a pin, '2".

The bearing-plate E is an important fea ture of the invention, as it,wit-h the adjustable pin B, admits of the device being applicable for operating on tires of different diameters. Vere the stock 0 a fixed bed for the tire to rest upon and the pin B not adjustable, it would be impossible for tires of different diameters to be shrunk in perfect circular form. Devices on the same principle as mine have been constructed with a fixed pin, B, and a curved stock or bed -piece to receive the tire; but they only operate perfectly when a tire is applied to them the radius of which corresponds to the bars A A. (See patent granted to A. Oassell, October 16, 1860, in which two bars with a fixed pin and a curved stock is used.)

I do not claim, separately, any of the parts herein shown and described, for the bars A A and jaws D I), or their equivalents, have been used together with the stock 0 and cam F; but

I do claim as new and desire to secure by Letters Patent- 1. The cams ff, in combination with the jaws D D,attached to the bars A A, and arranged, in relation with the jaws, to operate as and for the purpose specified.

2. The key H, when used in connection with the bars A A, jaws D D, cams ff, stock C, and cam F, as and for the purpose set forth ALFRED INGALLS.

\Vitnesses:

W. CHANDLER, D. P. DANIEL. 

